Hi There Cat,
Welcome to the site.
Bet you can't wait to get your little puppy, you've certainly found the right place anyway, i don't know if you have owned a dog or even labradors before, but if you haven't, you'll get lots of good advice from all the lab lovers on here.
With regard to vegetarian dog food, i'm afraid i haven't used this before, but i'm sure someone will have done, and will get back to you with a reply very soon.
I'd like to wish you all the best for your lovely new arrival, and look forward to hearing more about him in the weeks to come.
Kind Regards
Julie
Bradleysmum 8)